Justin Bieber's Having a Plain White T-Shirt Sale

Justin Bieber‘s helping out a new business, and it has nothing to do with music.

The Biebs is dropping a very limited line of white tees with designer/stylist xKarla at a pop-up shop in L.A … according to sources connected to the deal. We’re told Hanes is also involved and the model pushing the threads is none other than JB.

The shirts will sell for $30 a pop and be available for people to buy in person in the L.A. area. The shirts can be purchased in 1 of 3 ways … order on the Postmates app, show up at a pop-up store that will surface Sunday in the City of Angels or purchasing them online when they become available on xKarla.com tomorrow.